wmic_server setup

[Woland]

Hello everyone,

I’ve been trying to setup the monitoring using the new wmic server but have hit a roadblock

When I run
PYTHONPATH=/etc/aiowmi/aiowmi FLASK_ENV=development WMIC_SERVER_DEBUG=1 python3 /etc/aiowmi/contrib/wmic_server/wmic_server.py
Traceback (most recent call last):
File “/etc/aiowmi/contrib/wmic_server/wmic_server.py”, line 5, in <module>
from flask import Flask, jsonify, request, make_response
File “/usr/local/lib64/python3.6/site-packages/flask/__init__.py”, line 7, in <module>
from .app import Flask as Flask
File “/usr/local/lib64/python3.6/site-packages/flask/app.py”, line 20, in <module>
from werkzeug.routing import BuildError
File “/usr/local/lib/python3.6/site-packages/werkzeug/routing.py”, line 1378, in <module>
class UUIDConverter(BaseConverter):
File “/usr/local/lib/python3.6/site-packages/werkzeug/routing.py”, line 1393, in UUIDConverter
def to_python(self, value: str) -> uuid.UUID:
AttributeError: module ‘uuid’ has no attribute ‘UUID’

When I try to run
nice gunicorn -b 127.0.0.1:2313 –pythonpath /etc/aiowmi/aiowmi,/etc/aiowmi/contrib/wmic_server –threads 1 wmic_server:app
[2022-07-16 12:03:47 +1000] [1386296] [INFO] Starting gunicorn 20.1.0
[2022-07-16 12:03:47 +1000] [1386296] [INFO] Listening at: http://127.0.0.1:2313 (1386296)
[2022-07-16 12:03:47 +1000] [1386296] [INFO] Using worker: sync
[2022-07-16 12:03:47 +1000] [1386299] [INFO] Booting worker with pid: 1386299
[2022-07-16 12:03:47 +1000] [1386299] [ERROR] Exception in worker process
Traceback (most recent call last):
File “/usr/local/lib/python3.6/site-packages/gunicorn/arbiter.py”, line 589, in spawn_worker
worker.init_process()
File “/usr/local/lib/python3.6/site-packages/gunicorn/workers/base.py”, line 134, in init_process
self.load_wsgi()
File “/usr/local/lib/python3.6/site-packages/gunicorn/workers/base.py”, line 146, in load_wsgi
self.wsgi = self.app.wsgi()
File “/usr/local/lib/python3.6/site-packages/gunicorn/app/base.py”, line 67, in wsgi
self.callable = self.load()
File “/usr/local/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py”, line 58, in load
return self.load_wsgiapp()
File “/usr/local/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py”, line 48, in load_wsgiapp
return util.import_app(self.app_uri)
File “/usr/local/lib/python3.6/site-packages/gunicorn/util.py”, line 359, in import_app
mod = importlib.import_module(module)
File “/usr/lib64/python3.6/importlib/__init__.py”, line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File “<frozen importlib._bootstrap>”, line 994, in _gcd_import
File “<frozen importlib._bootstrap>”, line 971, in _find_and_load
File “<frozen importlib._bootstrap>”, line 955, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 665, in _load_unlocked
File “<frozen importlib._bootstrap_external>”, line 678, in exec_module
File “<frozen importlib._bootstrap>”, line 219, in _call_with_frames_removed
File “/etc/aiowmi/contrib/wmic_server/wmic_server.py”, line 5, in <module>
from flask import Flask, jsonify, request, make_response
File “/usr/local/lib64/python3.6/site-packages/flask/__init__.py”, line 7, in <module>
from .app import Flask as Flask
File “/usr/local/lib64/python3.6/site-packages/flask/app.py”, line 20, in <module>
from werkzeug.routing import BuildError
File “/usr/local/lib/python3.6/site-packages/werkzeug/routing.py”, line 1378, in <module>
class UUIDConverter(BaseConverter):
File “/usr/local/lib/python3.6/site-packages/werkzeug/routing.py”, line 1393, in UUIDConverter
def to_python(self, value: str) -> uuid.UUID:
AttributeError: module ‘uuid’ has no attribute ‘UUID’
[2022-07-16 12:03:47 +1000] [1386299] [INFO] Worker exiting (pid: 1386299)
[2022-07-16 12:03:47 +1000] [1386296] [INFO] Shutting down: Master
[2022-07-16 12:03:47 +1000] [1386296] [INFO] Reason: Worker failed to boot.

I’m running rocky linux, thanks for your help

[trentasis]

Hi,
similar error

# WMIC_SERVER_CONFIG=/tmp/wmicserver/aiowmi-main/contrib/wmic_server/wmic_server.yaml PYTHONPATH=/tmp/wmicserver/aiowmi-main/aiowmi/ FLASK_ENV=development WMIC_SERVER_DEBUG=1 python /tmp/wmicserver/aiowmi-main/contrib/wmic_server/wmic_server.py
File “/tmp/wmicserver/aiowmi-main/contrib/wmic_server/wmic_server.py”, line 41
debug and print(“YAML configuration is:”)
^
SyntaxError: invalid syntax

Any suggestion?

Can you detail pyton version required and dependenciens or moduels required and how to isntall?

thanks

[Woland]

I can’t seem to post, this is my third time now
I have all the requirements.txt satisfied in both aiowmi and wmic_server

This is the error
PYTHONPATH=/usr/bin/python FLASK_ENV=development WMIC_SERVER_DEBUG=1 python /etc/aiowmi/contrib/wmic_server/wmic_server.
py
Traceback (most recent call last):
File “/etc/aiowmi/contrib/wmic_server/wmic_server.py”, line 18, in <module>
from aiowmi.connection import Connection
File “<frozen importlib._bootstrap>”, line 971, in _find_and_load
File “<frozen importlib._bootstrap>”, line 955, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 656, in _load_unlocked
File “<frozen importlib._bootstrap>”, line 626, in _load_backward_compatible
File “/usr/local/lib/python3.6/site-packages/aiowmi-0.2.1-py3.6.egg/aiowmi/connection.py”, line 5, in <module>
File “<frozen importlib._bootstrap>”, line 971, in _find_and_load
File “<frozen importlib._bootstrap>”, line 955, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 656, in _load_unlocked
File “<frozen importlib._bootstrap>”, line 626, in _load_backward_compatible
File “/usr/local/lib/python3.6/site-packages/aiowmi-0.2.1-py3.6.egg/aiowmi/protocol.py”, line 5, in <module>
File “<frozen importlib._bootstrap>”, line 971, in _find_and_load
File “<frozen importlib._bootstrap>”, line 955, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 656, in _load_unlocked
File “<frozen importlib._bootstrap>”, line 626, in _load_backward_compatible
File “/usr/local/lib/python3.6/site-packages/aiowmi-0.2.1-py3.6.egg/aiowmi/dcom.py”, line 8, in <module>
File “<frozen importlib._bootstrap>”, line 971, in _find_and_load
File “<frozen importlib._bootstrap>”, line 951, in _find_and_load_unlocked
File “<frozen importlib._bootstrap>”, line 894, in _find_spec
File “<frozen importlib._bootstrap_external>”, line 1157, in find_spec
File “<frozen importlib._bootstrap_external>”, line 1131, in _get_spec
File “<frozen importlib._bootstrap_external>”, line 1112, in _legacy_get_spec
File “<frozen importlib._bootstrap>”, line 441, in spec_from_loader
File “<frozen importlib._bootstrap_external>”, line 544, in spec_from_file_location
File “/usr/local/lib/python3.6/site-packages/aiowmi-0.2.1-py3.6.egg/aiowmi/rpc/bind_ack.py”, line 1
SyntaxError: future feature annotations is not defined

[admin]

It looks like you might need python >= 3.7

https://stackoverflow.com/questions/52889746/cant-import-annotations-from-future

[Woland]

Thanks for your help admin!

I’ve upgraded to 3.9 and used the following to install requirements

python3.9 -m pip install -r /etc/aiowmi/requirements.txt
WARNING: Running pip install with root privileges is generally not a good idea. Try python3.9 -m pip install --user instead.
Collecting pycryptodome>=3.14.0
Downloading pycryptodome-3.15.0-cp35-abi3-manylinux2010_x86_64.whl (2.3 MB)
|████████████████████████████████| 2.3 MB 28.3 MB/s
Installing collected packages: pycryptodome
Successfully installed pycryptodome-3.15.0

[root@nagios ~]# python3.9 -m pip install -r /etc/aiowmi/contrib/wmic_server/requirements.txt
WARNING: Running pip install with root privileges is generally not a good idea. Try python3.9 -m pip install --user instead.
Collecting aiowmi>=0.1.17
Downloading aiowmi-0.2.1.tar.gz (75 kB)
|████████████████████████████████| 75 kB 5.3 MB/s
Collecting Flask>=2.0.3
Downloading Flask-2.2.0-py3-none-any.whl (101 kB)
|████████████████████████████████| 101 kB 16.7 MB/s
Collecting PyYAML>=6.0
Downloading PyYAML-6.0-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl (661 kB)
|████████████████████████████████| 661 kB 36.0 MB/s
Requirement already satisfied: pycryptodome>=3.14.0 in /usr/local/lib64/python3.9/site-packages (from aiowmi>=0.1.17->-r /etc/aiowmi/contrib/wmic_server/requirements.txt (line 1)) (3.15.0)
Collecting Jinja2>=3.0
Downloading Jinja2-3.1.2-py3-none-any.whl (133 kB)
|████████████████████████████████| 133 kB 19.0 MB/s
Collecting itsdangerous>=2.0
Downloading itsdangerous-2.1.2-py3-none-any.whl (15 kB)
Collecting click>=8.0
Downloading click-8.1.3-py3-none-any.whl (96 kB)
|████████████████████████████████| 96 kB 9.9 MB/s
Collecting importlib-metadata>=3.6.0; python_version < “3.10”
Downloading importlib_metadata-4.12.0-py3-none-any.whl (21 kB)
Collecting Werkzeug>=2.2.0
Downloading Werkzeug-2.2.1-py3-none-any.whl (232 kB)
|████████████████████████████████| 232 kB 29.5 MB/s
Collecting MarkupSafe>=2.0
Downloading MarkupSafe-2.1.1-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (25 kB)
Collecting zipp>=0.5
Downloading zipp-3.8.1-py3-none-any.whl (5.6 kB)
Using legacy ‘setup.py install’ for aiowmi, since package ‘wheel’ is not installed.
Installing collected packages: aiowmi, MarkupSafe, Jinja2, itsdangerous, click, zipp, importlib-metadata, Werkzeug, Flask, PyYAML
Running setup.py install for aiowmi … done
Successfully installed Flask-2.2.0 Jinja2-3.1.2 MarkupSafe-2.1.1 PyYAML-6.0 Werkzeug-2.2.1 aiowmi-0.2.1 click-8.1.3 importlib-metadata-4.12.0 itsdangerous-2.1.2 zipp-3.8.1

[admin]

Did you get this sorted? I assume that there are probably other dependencies

[p7s1p4]

you should get the mentioned python modules via pip:
flask, aiowmi, pycryptodome, pyyaml
eg
python -m pip install pyyaml

when they are found by your python interpreter you can start the server easily … python must be version 3.7 or higher …

[superskunk]

hi all, i have problems creating service for the wmic server. i tried to use the sample and edit it to my needs, but i’m not good and it doesn’t work. here’s my service:
[Unit]
Description=WMIC Server

[Service]
Restart=always
# we need the pythonpath to contain the aiowmi directory and the directory where the wmic_server.py is locat$

# Update the following placeholders before using this file
AIOWMI_INSTALL_DIR= /home/engineering/aiowmi/
WMIC_SERVER_INSTALL_DIR= /home/engineering/aiowmi/contrib/wmic_server/
WMIC_SERVER_CONFIG= /home/engineering/aiowmi/contrib/wmic_server/

ExecStart= nice gunicorn -b 127.0.0.1:2313 –pythonpath AIOWMI_INSTALL_DIR,WMIC_SERVER_INSTALL_DIR –threads 1 “wmic_server:app”
ExecStop= /usr/bin/pkill -f “wmic_server:app”

# Optionally, use these additional settings
# WMIC_SERVER_CONFIG_DIRECTORY defaults to WMIC_SERVER_INSTALL_DIR
# Environment=WMIC_SERVER_CONFIG=WMIC_SERVER_CONFIG_DIRECTORY/wmic_server.yaml
# Environment=WMIC_SERVER_DEBUG=1

[Install]
WantedBy=multi-user.target
——————————————————————————————————–

And this is the error:
[/usr/lib/systemd/system/wmic_server.service:13] Executable path is not absolute, ignoring: nice gunicorn -b 127.0.0.1:2313 –pythonpath AIOWMI_INSTALL_DIR,WMIC_SERVER_INSTALL_DIR –threads 1 “wmic_server:app”
Oct 21 15:51:52 TESSCENTWEB001.xxx.IT systemd[1]: wmic_server.service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.

i know that the problem is that i don’t have the necessary knowledge, can someone help me? thank you very much

[admin]

Can you run the wmic server successfully from the command line?
If yes, then you have a systemd problem. Perhaps try a systemd forum?

[superskunk]

yes i can run succesfully the server with the command PYTHONPATH=/home/xxx/aiowmi/ WMIC_SERVER_DEBUG=1 python3.7 /home/xxx/aiowmi/contrib/wmic_server/wmic_server.py but i have hundreds of wmi checks and i read that starting server in this way is not recomended in production. Now i have simply created a boot script that launches the python command above, but i’d like to run the service properly.

[mdicss]

Hi
I run into the same problem. There is a conflict with two scripts uuid.py and the path to find one. For me
pip3 uninstall uuid
pip3 uninstall aiowmi
pip3 install aiowmi
did the trick.

[bisontim]

I solved with User inside the service definition and adding the full path to nice and unicorn.
This is my procedure:
which gunicorn
/home/administrator/.local/bin/gunicorn

So I put into wmic_server.service:

[Unit]
Description=WMIC Server

[Service]
User=administrator
Restart=always
# we need the pythonpath to contain the aiowmi directory and the directory where the wmic_server.py is located

# Update the following placeholders before using this file
# AIOWMI_INSTALL_DIR
# WMIC_SERVER_INSTALL_DIR
# WMIC_SERVER_CONFIG

ExecStart=/usr/bin/nice /home/administrator/.local/bin/gunicorn -b 127.0.0.1:2313 –pythonpath /etc/wmic_server,/etc/wmic_server/aiowmi/contrib/wmic_server –threads 1 wmic_server:app
ExecStop=/usr/bin/pkill -f “wmic_server:app”

# Optionally, use these additional settings
# WMIC_SERVER_CONFIG_DIRECTORY defaults to WMIC_SERVER_INSTALL_DIR
# Environment=WMIC_SERVER_CONFIG=WMIC_SERVER_CONFIG_DIRECTORY/wmic_server.yaml
# Environment=WMIC_SERVER_DEBUG=1

[Install]
WantedBy=multi-user.target

And it works.
Furthermore, you have to subsitute the placeholder AIOWMI_INSTALL_DIR and WMIC_SERVER_INSTALL_DIR in the ExecStart, not to use them as variables.

Bye
Mario

• This reply was modified 8 months, 2 weeks ago by bisontim.

[superskunk]

Bella Mario sei un grande! i used Mario’s suggestion and now the service works like a charm. Thanks a lot.

[ShakeZpear]

I am stuck in a similar but slightly different situation – but none of the above solved the problem of wmic_server not starting.

The primary visible symptom is following “last message” of the starting server:

“ImportError: cannot import name ‘UUID’ from ‘uuid’ (/opt/commoc/lib/python3/aiowmi/uuid.py)”

Versions:

Ubuntu 20.04
Python3: 3.8.10
gunicorn 20.0.4

The wmic_server.yaml ist the unchanged sample file.

I am stuck with my intellectual abilities here 🙂

Thanks for any help.

Complete Stack trace:

nice[1255306]: [INFO] Starting gunicorn 20.0.4
nice[1255306]: [1255306] [INFO] Listening at: http://127.0.0.1:2313 (1255306)
nice[1255306]: [1255306] [INFO] Using worker: sync
nice[1255310]: [1255310] [INFO] Booting worker with pid: 1255310
nice[1255310]: [ERROR] Exception in worker process
nice[1255310]: Traceback (most recent call last):
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/arbiter.py”, line 583, in spawn_worker
nice[1255310]: worker.init_process()
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/workers/base.py”, line 119, in init_process
nice[1255310]: self.load_wsgi()
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/workers/base.py”, line 144, in load_wsgi
nice[1255310]: self.wsgi = self.app.wsgi()
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/app/base.py”, line 67, in wsgi
nice[1255310]: self.callable = self.load()
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/app/wsgiapp.py”, line 49, in load
nice[1255310]: return self.load_wsgiapp()
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/app/wsgiapp.py”, line 39, in load_wsgiapp
nice[1255310]: return util.import_app(self.app_uri)
nice[1255310]: File “/usr/lib/python3/dist-packages/gunicorn/util.py”, line 383, in import_app
nice[1255310]: mod = importlib.import_module(module)
nice[1255310]: File “/usr/lib/python3.8/importlib/__init__.py”, line 127, in import_module
nice[1255310]: return _bootstrap._gcd_import(name[level:], package, level)
nice[1255310]: File “<frozen importlib._bootstrap>”, line 1014, in _gcd_import
nice[1255310]: File “<frozen importlib._bootstrap>”, line 991, in _find_and_load
nice[1255310]: File “<frozen importlib._bootstrap>”, line 975, in _find_and_load_unlocked
nice[1255310]: File “<frozen importlib._bootstrap>”, line 671, in _load_unlocked
nice[1255310]: File “<frozen importlib._bootstrap_external>”, line 848, in exec_module
nice[1255310]: File “<frozen importlib._bootstrap>”, line 219, in _call_with_frames_removed
nice[1255310]: File “/opt/commoc/bin/wmic_server/wmic_server.py”, line 5, in <module>
nice[1255310]: from flask import Flask, jsonify, request, make_response
nice[1255310]: File “/usr/lib/python3/dist-packages/flask/__init__.py”, line 21, in <module>
nice[1255310]: from .app import Flask
nice[1255310]: File “/usr/lib/python3/dist-packages/flask/app.py”, line 60, in <module>
nice[1255310]: from .sessions import SecureCookieSessionInterface
nice[1255310]: File “/usr/lib/python3/dist-packages/flask/sessions.py”, line 22, in <module>
nice[1255310]: from .json.tag import TaggedJSONSerializer
nice[1255310]: File “/usr/lib/python3/dist-packages/flask/json/tag.py”, line 47, in <module>
nice[1255310]: from uuid import UUID
nice[1255310]: ImportError: cannot import name ‘UUID’ from ‘uuid’ (/opt/commoc/lib/python3/aiowmi/uuid.py)
nice[1255310]: [2023-03-18 10:05:45 +0100] [1255310] [INFO] Worker exiting (pid: 1255310)
nice[1255306]: [2023-03-18 10:05:45 +0100] [1255306] [INFO] Shutting down: Master
nice[1255306]: [2023-03-18 10:05:45 +0100] [1255306] [INFO] Reason: Worker failed to boot.
Mar 18 10:05:46 ubu2004commoc-installtest systemd[1]: wmic_server.service: Main process exited, code=exited, status=3/NOTIMPLEMENTED
Mar 18 10:05:46 ubu2004commoc-installtest systemd[1]: wmic_server.service: Failed with result ‘exit-code’.
Mar 18 10:05:46 ubu2004commoc-installtest systemd[1]: wmic_server.service: Scheduled restart job, restart counter is at 4.
Mar 18 10:05:46 ubu2004commoc-installtest systemd[1]: Stopped WMIC Server.

[ShakeZpear]

forgot: aiowmi version 0.2.3

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